package PTA2.ti27;

import java.util.Scanner;

/**
 * @author Lenovo
 */
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int y = scanner.nextInt();
        if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0) {
            System.out.println("yes");
        } else {
            System.out.println("no");
        }
        scanner.close();
    }
}
